Spatially-aware projection pen for dynamic document interaction
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Solution Overview
Problem
Current digital pen devices have limited output capabilities, primarily relying on small OLED displays or LEDs for visual feedback, which are inadequate for complex interactions such as searching within documents.
Innovation Solution
A spatially-aware projection pen system that includes an input mechanism, position tracking, memory, a projector, and a processor, allowing for dynamic visual feedback by projecting images and data onto a surface, enhancing interaction capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If small OLED displays or LEDs are used for visual feedback in digital pens, then the device complexity is reduced, but the visual output capability is insufficient for complex interactions
Solution Approach 1:
The patent combines a digital pen with a projector to create an integrated device that projects visual output directly onto the document surface. This merging of functions allows the pen to provide both input capabilities (writing, pointing) and output capabilities (visual feedback, information display) in a single device, resolving the contradiction between simplicity and versatility.
Solution Approach 2:
The patent transitions from two-dimensional display (small OLED on pen surface) to three-dimensional projection (visual output on document plane). By projecting images onto the document surface, the system creates a larger, more immersive display that leverages the document itself as the display medium, significantly enhancing visual output capability without proportionally increasing device complexity.
2Adaptability or versatility
If a projector is integrated into the digital pen, then the visual output capability is enhanced, but the device complexity increases
Solution Approach 1:
The projector in the patent serves multiple functions: displaying visual feedback, presenting information, providing contextual data, and enabling interactive operations. This multi-functionality justifies the added complexity by delivering diverse visual output capabilities from a single integrated component, making the pen adaptable to various interaction scenarios.
Solution Approach 2:
The patent uses the document surface as an intermediary between the pen and the user's visual perception. Instead of requiring a large display on the pen itself, the system projects images onto the document, which then serves as the display medium. This intermediary approach allows complex visual output without requiring a proportionally complex pen device.
3Ease of manufacture
If visual feedback is limited to small displays on the pen, then the ease of manufacture is improved, but the interaction capability for complex tasks is reduced
Solution Approach 1:
The patent merges the pen and projector into a single device that can be manufactured and integrated using existing technologies. By combining relatively simple components (pen mechanism, projector module, tracking system) into an integrated device, the system achieves enhanced interaction capability while maintaining reasonable ease of manufacture through modular design and assembly.
Data Source
AI summary
One embodiment of the present invention sets forth a technique for providing an end user with a digital pen embedded with a spatially-aware miniature projector for use in a design environment. Paper documents are augmented to allow a user to access additional information and computational tools through projected interfaces. Virtual ink may be managed in single and multi-user environments to enhance collaboration and data management. The spatially-aware projector pen provides end-users with dynamic visual feedback and improved interaction capabilities.